
Concept explainers
Of the given situations which is proportional and which is non proportional.

Answer to Problem 17HP
The result is Abraham's savings is not proportional.
The result is John's savings is proportional
Explanation of Solution
Giveninformation:
John decides to save $20 each week.
Abraham has already $10 and wants to save additional $20 each week.
Money saved by Abraham in the first week is $30.
Money saved by Abraham in the second week is $50.
Ratio between the weeks and money is
Thus the ratio is not constant.
Hence, the result is Abraham's savings is not proportional.
Money saved by John in the first week is $20.
Money saved by John in the second week is $40.
Ratio between the weeks and money is
Thus the ratio is constant.
Hence, the result is John's savings is proportional.
Chapter 6 Solutions
Pre-Algebra Student Edition
Additional Math Textbook Solutions
Calculus: Early Transcendentals (2nd Edition)
Thinking Mathematically (6th Edition)
Elementary Statistics: Picturing the World (7th Edition)
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
College Algebra with Modeling & Visualization (5th Edition)
Algebra and Trigonometry (6th Edition)
- Solve the following system of equations using matrices: -2x + 4y = 8 and 4x - 3y = 9 Note: This is the same system of equations referenced in Question 14. If a single solution exists, express your solution as an (x,y) coordinate point with no spaces. If there are infinite solutions write inf and if there are no solutions write ns in the box.arrow_forwardI need help explaining on this examplearrow_forwardConsider the table of values below. x y 2 64 3 48 4 36 5 27 Fill in the right side of the equation y= with an expression that makes each ordered pari (x,y) in the table a solution to the equation.arrow_forward
- solving for xarrow_forwardConsider the table of values below. x y 2 63 3 70 4 77 5 84 Fill in the right side of the equation y= with an expression that makes each ordered pari (x,y) in the table a solution to the equation.arrow_forwardThere were 426 books sold in one week. The number of biology books sold was 5 times that of the number of psychology books. How many books each were sold?arrow_forward
- Population decreases 5% each year. Starts with a starting population of 3705. Find that population after 5 years.arrow_forwardsolve using substitution -2x-3y=-15 -3x+9y=12arrow_forwardSuppose that 7000 is placed in an accout that pays 4% interest. Interest compunds each year. Assume that no withdraws are made. How much would the account have after 1 year? And how much would the account have after 2 years?arrow_forward
- Use substitution to solve the equations -2x+5y=18 x=2y-8arrow_forward5) For each function represented by an equation, make a table and plot the corresponding points to sketch the graph of the function. (a) y = 75 ()* 220 X y 200- -2 180 160 -1 140 0 120 100 1 60 80 2 3 4 x (b) y = 20 ()* 1 60 40 20 20 0 2 3 65- -1 X y 60 -2 55- 50 45 44 40 0 35- 30 1 25 2 20 20 15 3 10 5 LO 4 3-2 T -1 0 5- 4- -3- 2-arrow_forwardA system of inequalities is shown. y 5 3 2 1 X -5 -4 -3 -2 -1 0 1 2 3 4 5 -1- Which system is represented in the graph? Oy>-x²-x+1 y 2x²+3 -2 -3 тarrow_forward
- Algebra and Trigonometry (6th Edition)AlgebraISBN:9780134463216Author:Robert F. BlitzerPublisher:PEARSONContemporary Abstract AlgebraAlgebraISBN:9781305657960Author:Joseph GallianPublisher:Cengage LearningLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning
- Algebra And Trigonometry (11th Edition)AlgebraISBN:9780135163078Author:Michael SullivanPublisher:PEARSONIntroduction to Linear Algebra, Fifth EditionAlgebraISBN:9780980232776Author:Gilbert StrangPublisher:Wellesley-Cambridge PressCollege Algebra (Collegiate Math)AlgebraISBN:9780077836344Author:Julie Miller, Donna GerkenPublisher:McGraw-Hill Education





